Success. Is not the position where you are standing, but which direction you are going.

Leisure only means a chance to do other jobs that demand attention.

The ultimate good desired is better reached by free trade in ideas [and] the best test of truth is the power of the thought to get itself accepted in the competition of the market.

The difference between gossip and philosophy lies only in one's way of taking a fact.

The riders in a race do not stop when they reach the goal. There is a little finishing canter before coming to a standstill. There is time to hear the kind voices of friends and say to oneself, The work is done.

People talk fundamentals and superlatives and then make some changes of detail.

Certitude is not the test of certainty.