Here or nowhere is our heaven.

It's not enough to be busy.

It is remarkable that there is little or nothing to be remembered written on the subject of getting a living: how to make getting a living not merely honest and honorable, but altogether inviting and glorious; for if getting a living is not so, then living is not.

Men talk of freedom! How many are free to think? Free from fear, from perturbation, from prejudice? Nine hundred and ninety-nine in a thousand are perfect slaves.

There are nowadays professors of philosophy, but not philosophers

Scholars are wont to sell their birthright for a mess of learning.

In the production of the necessaries of life Nature is ready enough to assist man.