Don’t take it personally when someone turns you down. Assume they are like you: busy， occupied， distracted. Try again later. It’s amazing how often a second try works.
I'm like a dog, I don't shit where I eat.
We must balance economic growth with ecological preservation—there's no other option.
There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery.
