The Journal

OK, so something weird arrived in my mailbox: a leather-bound diary with that GODDAMNED (X) SYMBOL on the cover. There's a shit load of code in here.
If anyone can decipher this first page, you will have my gratitude.

B64
VG8gd2hvZXZlciB0aGUgVGhpbiBNYW4gZm9sbG93czogWW91IG11c3Qgbm90IGNvbmZy
b250IHRoaXMgaG9ycmlibGUNCnRoaW5nLiBJdCBpcyBub3Qgb2Ygb3VyIHJlYWxpdHks
IGFuZCBpcyBtb3JlIGRhbmdlcm91cyB0aGFuIGFueW9uZSB0aGlua3MuIFJ1bi4gUnVu
LCBhbmQgZG8gbm90IHN0b3AuDQoNCg==


I'm really frickin' stumped.

EDIT: Hold the phone. I looked at another page and it had the same block of text, except some letters were italicized:
B64
VG8gd2hvZXZlciB0aGUgVGhpbiBNYW4gZm9sbG93czogWW91IG11c3Qgbm90IGNvbmZy
b250IHRoaXMgaG9ycmlibGUNCnRoaW5nLiBJdCBpcyBub3Qgb2Ygb3VyIHJlYWxpdHks
IGFuZCBpcyBtb3JlIGRhbmdlcm91cyB0aGFuIGFueW9uZSB0aGlua3MuIFJ1bi4gUnVu
LCBhbmQgZG8gbm90IHN0b3AuDQoNCg==

I think it's a clue, but I'm no code-breaker.