Zeno was concerned with three problems... These are the problem of the infinitesimal, the infinite, and continuity.

The really useful education is that which follows the direction of the child's own instinctive interests, supplying knowledge for which it is seeking, not dry, detailed information wholly out of relation to its spontaneous desires.

We do not like to be robbed of an enemy; we want someone to hate when we suffer. It is so depressing to think that we suffer because we are fools; yet, taking mankind in the mass, that is the truth.

Of all forms of caution, caution in love is perhaps the most fatal to true happiness.

Animal rights, taken to their logical conclusion, mean votes for oysters.

To be able to concentrate for a considerable time is essential to difficult achievement.

It is possible that mankind is on the threshold of a golden age; but, if so, it will be necessary first to slay the dragon that guards the door, and this dragon is religion.