If merely 'feeling good' could decide, drunkenness would be the supremely valid human experience.
Intelligence is a fixed goal with variable means of achieving it.
Whenever two people meet, there are really six people present. There is each man as he sees himself, each man as the other person sees him, and each man as he really is.
The attitude of unhappiness is not only painful, it is mean and ugly.
Strength is a facade for the proud, weakness is a mask for the lazy.
Geniuses are commonly believed to excel other men in their power of sustained attention . . . But it is their genius making them attentive, not their attention making geniuses of them.