Identical twins are ideal lab specimens for studying the difference between learned and inherited traits since they come from the womb preloaded with matching genetic operating systems. Any meaningful differences in their behaviors or personalities are thus likely to have been acquired, not innate.
Jeffrey KlugerRelated topics
difference lab likely thusRelated quotes
Those only are happy who have their minds fixed on some object other than their own happiness; on the happiness of others, on the improvement of mankind, even on some art or pursuit, followed not as a means, but as itself an ideal end. Aiming thus at something else, they find happiness by the way.
John Stuart Mill
There are some things which cannot be learned quickly, and time, which is all we have, must be paid heavily for their acquiring. They are the very simplest things and, because it takes a man's life to know them, the little new that each man gets from life is very costly and the only heritage he has to leave.
Ernest Hemingway
Let us not allow the splits and splintering to frighten us. It is, indeed, a pity, but what can we do, since we are all Bulgarians and all suffer from one common disease. If this disease had not been present in our ancestors, from whom we inherited it, they would have never fallen under the sceptre of the Turkish Sultan...
Gotse Delchev
I don't know Who, or what, put the question, I don't know when it was put. I don't even remember answering. But at some moment I did answer Yes to Someone, or Something, and from that hour I was certain that existence is meaningful and that, therefore, my life, in self-surrender, had a goal.
Dag Hammarskjöld