"Always leave something to wish for; otherwise you will be miserable from your very happiness" — Baltasar Gracian y Morales

As is your sort of mind, so is your sort of search: You'll find what you desire

Consider your origin; you were not born to live like brutes, but to follow virtue and knowledge

Small projects need much more help than great ones

The scientist is a lover of truth for the very love of truth itself, wherever it may lead

If we desire respect for the law, we must first make the law respectable

To dry one's eyes and laugh at a fall, and, baffled, get up and begin again

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