Human nature is so constituted that insults sink deeper than kindnesses; the remembrance of the latter soon passes away, while that of the former is treasured in the memory.
Some there are that torment themselves afresh with the memory of what is past; others, again, afflict themselves with the apprehension of evils to come; and very ridiculously both - for the one does not now concern us, and the other not yet ... One should count each day as a separate life.
Things that were hard to bear are sweet to remember.
It is one thing to remember, another to know. To remember is to safeguard something entrusted to the memory. But to know is to make each thing one's own, not depend on the text and always to look back to the teacher. "Zeno said this, Cleanthes said this." Let there be space between you and the book.
The deep waters of time will flow over us: only a few men of genius will lift a head above the surface, and though doomed eventually to pass into the same silence, will fight against oblivion and for a long time hold their own.
The time will come when diligent research over periods will bring to light things which now lie hidden...Many discoveries are reserved for ages still to come, when memories of us will have been effaced. Our universe is a sorry little affair unless it has something for every age to investigate. nature does not reveal her mysteries once and for all.
How many discoveries are reserved for the ages to come when our memory shall be no more, for this world of ours contains matter for investigation for all generations.