Do not be too timid and squeamish about your actions. All life is an experiment. The more experiments you make the better. What if they are a little coarse and you may get your coat soiled or torn? What if you do fail, and get fairly rolled in the dirt once or twice? Up again, you shall never be so afraid of a tumble.
The quality of everything we do: our physical actions, our verbal actions, and even our mental actions, depends on our motivation. That's why it's important for us to examine our motivation in our day to day life. If we cultivate respect for others and our motivation is sincere, if we develop a genuine concern for others’ well-being, then all our actions will be positive.
I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success ... Such emotions make a man forget food, sleep, friends, love, everything.
The sun shines and warms and lights us and we have no curiosity to know why this is so; but we ask the reason of all evil, of pain, and hunger, and mosquitoes and silly people.