Great spirits have always encountered violent opposition from mediocre minds. –Albert Einstein

Pure logic scintillates in human darkness like the refraction of light from lovely jewels. It stands out amidst mental confusion. –Alfred J. Parker

There exists, if I am not mistaken, an entire world which is the totality of mathematical truths, to which we have access only with our mind, just as a world of physical reality exists, the one like the other independent of ourselves, both of divine creation. –Charles Hermite

If you are depressed, you are living in the past.
If you are anxious, you are living in the future.
If you are at peace, you are living in the present. –Unknown