Here the ways of men divide. If you wish to strive for peace of soul and happiness, then believe; if you wish to be a disciple of truth, then inquire.

All idealists imagine that the causes they serve are fundamentally better than any other causes in the world, and they refuse to believe that if their cause is to flourish at all it requires precisely the same foul-smelling manure that is necessary to all other human undertakings.

What a dissimilarity we see in walking, swimming, and flying. And yet it is one and the same motion: it is just that the load- bearing capacity of the earth differs from that of the water, and that that of the water differs from that of the air! Thus we should also learn to fly as thinkers--and not imagine that we are thereby becoming idle dreamers!

The elimination of the will altogether and the switching off of the emotions all and sundry, is tantamount to the elimination of reason: intellectual castration.

A man who is very busy seldom changes his opinions.

Happiness is the feeling that power increases - that resistance is being overcome.

Some rule out of a lust for ruling; others, so as not to be ruled:Mto these it is merely the lesser of two evils.