A man is not idle because he is absorbed in thought. There is a visible labour and an invisible labour.

A man is not idle because he is absorbed in thought. There is a visible labour and an invisible labour.

Thought is borne of failure.

Thought is borne of failure.

Thought is valuable in proportion as it is generative.

Thought is valuable in proportion as it is generative.

It is the mark of an educated mind to be able to entertain a
thought without accepting it.

It is the mark of an educated mind to be able to entertain a
thought without accepting it.

Thought takes man out of servitude, into freedom.

Thought takes man out of servitude, into freedom.

Arouse the mind without resting it on anything.

Arouse the mind without resting it on anything.

Original thoughts can be understood only in virtue of the
unoriginal elements which they contain.

Original thoughts can be understood only in virtue of the
unoriginal elements which they contain.

When thought becomes excessively painful, action is the finest remedy.

When thought becomes excessively painful, action is the finest remedy.

Learning without thought is labor lost.

Learning without thought is labor lost.