Each of us sees in others what we carry in our own hearts.

The key to every man is his thought.

All the tools and engines on earth are only extensions of man's limbs and senses.

It seems to be a rule of wisdom never to rely on your memory alone, scarcely even in acts of pure memory, but to bring the past for judgment into the thousand-eyed present, and live ever in a new day.

We do not yet possess ourselves, and we know at the same time that we are much more.

Our health is our sound relation to external objects; our sympathy with external being.

Travel is a fools paradise.