Some quotes:

“Inside every large program is a small program struggling to get out.” - Tony Hoare

“The happiness of your life depends upon the quality of your thoughts.” - Marcus Aurelius

“The purpose of computing is insight, not numbers.” - Richard Hamming

“The past has no power to stop you from being present now. Only your grievance about the past can do that.” - Eckhart Tolle

“Raise your quality standards as high as you can live with, avoid wasting your time on routine problems, and always try to work as closely as possible at the boundary of your abilities. Do this, because it is the only way of discovering how that boundary should be moved forward.” - Edsger Dijkstra