The union of the mathematician with the poet, fervor with measure, passion with correctness, this surely is the ideal.

Ninety-nine hundredths or, possibly, nine hundred and ninety-nine thousandths of our activity is purely automatic and habitual, from our rising in the morning to our lying down each night.

We forget that every good that is worth possessing must be paid for in strokes of daily effort. We postpone and postpone until those smiling possibilities are dead... By neglecting the necessary concrete labor, by sparing ourselves the little daily tax, we are positively digging the graves of our higher possibilities.

The exercise of voluntary attention in the schoolroom must therefore be counted one of the most important points of training that take place there; and the first-rate teacher, by the keenness of the remoter interests which he is able to awaken, will provide abundant opportunities for its occurrence.

Philosophy is "an unusually stubborn attempt to think clearly.

There are 3 rules to follow if you want to change; (1) Start immediately, (2) Do it flamboyantly, (3) No exceptions.

You can alter your life by altering the state of your mind.