ᴛʜᴇ ᴍᴏsᴛ ɪᴍᴘᴏʀᴛᴀɴᴛ ᴛʜɪɴɢ ᴛʜᴀᴛ ᴡᴇ sʜᴏᴜʟᴅ ʟᴇᴀʀɴ ɪs "ʟᴇᴛᴛɪɴɢ