"Nobody spends any money on smallpox unless..." - Quote by Bill Gates

“Teaching's hard! You need different skills: positive reinforcement, keeping students from getting bored, commanding their attention in a certain way.”

“Governments will always play a huge part in solving big problems. They set public policy and are uniquely able to provide the resources to make sure solutions reach everyone who needs them. They also fund basic research, which is a crucial component of the innovation that improves life for everyone.”

“I never took a day off in my twenties. Not one.”

“The only security a man can ever have is the ability to do a job uncommonly well.”

“Seek opportunity, not security. A boat in the harbor is safe, but in time its bottom will rot out.”

“To put is still more plainly: the desire for security and the feeling of insecurity are the same thing. To hold your breath is to lose your breath. A society based on the quest for security is nothing but a breath-retention contest in which everyone is as taut as a drum and as purple as a beet.”

“I learned from my two years' experience that it would cost incredibly little trouble to obtain one's necessary food; that a man may use as simple a diet as the animals, and yet retain health and strength.”

“Sickness is poor-spirited, and cannot serve anyone; it must husband its resources to live. But health or fullness answers its own ends, and has to spare, runs over, and inundates the neighborhoods and creeks of other men's necessities.”

“The first wealth is health.”