Answer:
Gandalf is...a bit of an enigma. I fancy he rather enjoys being mysterious. Gandalf the Grey was merry-quick to laugh, but also cross at times. Very closelipped, could be as difficult to extract information from as an Elf. He was not proud, as was Saruman, and considered even the hobbits to be worth learning from. By contrast, Gandalf the White was more solemn and serious, but more inclined to giving information.