Tobacco, coffee, alcohol, hashish, prussic acid, strychnine, are weak dilutions; the surest poison is time. This cup which nature puts to our lips, has a wonderful virtue, surpassing that of any other draught. It opens the senses, adds power, fills us with exalted dreams, which we call hope, love, ambition, science; especially it creates a craving for larger draughts of itself.

The colleges, while they provide us with libraries, furnish no professors of books; and I think no chair is so much needed.

Invention breeds invention.

All ages of belief have been great; all of unbelief have been mean.

Speak what you think today in hard words and tomorrow speak what tomorrow thinks in hard words again, though it contradict every thing you said today.

What you do speaks so loud that I cannot hear what you say.

The moment we indulge our affections, the earth is metamorphosed.