An eye for an eye, and a tooth for a tooth. Least said, soonest mended. Honey catches more flies than vinegar. We must take the bad with the good. You cannot teach an old dog new tricks. Beauty is but skin deep. All good things come to an end. Fortune favors the brave. Beauty is in the eye of the beholder. Learning is the enterprise of a lifetime. In wine there is truth. Faint heart never won fair lady. Brevity is the soul of wit. Waste not, want not. Much would have more. Doctors make the worst patients. An algorithm is an effective method for solving a problem using a finite sequence of instructions. Power corrupts; absolute power corrupts absolutely. All is fair in love and war. Knowledge is power. Health is better than wealth. Beauty is in the eye of the beholder. Easy come easy go. Diamond cut diamond. History repeats itself. Power corrupts; absolute power corrupts absolutely. One good turn deserves another. Paddle your own canoe. Spare the rod, spoil the child. Let sleeping dogs lie. Beauty is but skin deep. Prevention is better than cure. Waste not, want not. Turn a stumbling block into a stepping stone. Power corrupts; absolute power corrupts absolutely. Rules are made to be broken. Necessity is the mother of invention.