Magnificent Siberian tiger at the Denver Zoo
Though I am basically opposed to rote memory of facts without conceptual background, I have to say I am grateful to all my English teachers who required me to memorize poetry when I was young. I can still remember the entire body of some of them and enough of others that just hearing a few lines brings me closer to the subject. One of the poems I was required to memorize was this one by William Blake. Although I approach animal science from an evolutionary point of view, I still love the rhythm and imagery contained in Blake's poem.