Oblivion is not to be hired.

To ruminate upon evils, to make critical notes upon injuries, and be too acute in their apprehensions, is to add unto our own tortures, to feather the arrows of our enemies, to lash ourselves with the scorpions of our foes, and to resolve to sleep no more.

The world, which took six days to make, is likely to take us six thousand years to make out.

To extend our memories by monuments, whose death we daily pray for, and whose duration we cannot hope, without injury to our expectations in the advent of the last day, were a contradiction to our belief.

No one should approach the temple of science with the soul of a money changer.

We carry within us the wonders we seek without us.

I am the happiest man alive. I have that in me that can convert poverty to riches, adversity to prosperity, and I am more invulnerable than Archilles; Fortune hath not one place to hit me.