Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

Both are valid, but they have completely different meanings.

I stopped working means I once worked, and now no longer do. I stopped to work means that I once was doing something (unspecified, based on context), and I stopped from doing it so that I could work. I stopped to work and to think on my own. in order to work = with a meaning that I could work. The infinitive here has the meaning of in order to work and so that I could work.

I stopped cooking means I once cooked, and no longer do, but I stopped to cook means I stopped so that I was then able to cook.

What exactly is the common thread between the ‘great faith’ and the ‘great man’?

In the word quicksand, actually the word quick has all the old meaning :

Archaic
a. Am I always endowed with life?

Etym Online:

C. 1400, from M.E. quyk “living” (see quick) + sond “sand. “How

does quick sand that is not a fast sand mean fast

sand and not a living sand?