AnónimoArnau, JuanAsch, ScholemAya, AbdelmuminBatchelor, StephenBayona Aznar, BernardoBergson, HenriBertrand RussellBiardeau, MadeleineBodhi, BhikkhuCastaneda, CarlosChia, MantakChödrön, PemaCioran, EmilCRITCHLEY, SIMONDalai LamaDe Mello, AnthonyDESHIMARU TAISENDhiravamsaDoreen VirtueDuch, LluísEagleton, TerryEstrada, Juan AntonioFaure, BernardFlavio JosefoGaarder, JosteinGARCIA BAZAN, FRANCISCOGarcía, FranciscoGibran, KhalilGimbutas, MarijaGoldstein, JosephGray, JohnHawke, EthanHeidegger, MartinIdel, MosheJiddu KrishnamurtiJOHN STUART MILLJung, Carl GustavKant, ImmanuelKrishnamurti, JidduKüng, HansLacoste, Jean-YvesMacArdle, MeredithMansukh PatelMark TwainMelloni, JavierMerlo, VicenteMipham, SakyongMèlich, Joan-CarlesNorbu, Chögyal NamkhaiOdier, DanielOshoRamadan, TariqRimpoché, DudjomRivera Dorado, MiguelSABAN MARIO JAVIERSadhguruSAINT GERMAINSchmid, KonradSchuon, FrithjofSimmel, GeorgSotomayorSugatananda, AnagarikaTamayo, Juan JoséThurman, RobertTorres Queiruga, AndrésTrungpa, ChögyamVariosVarios autoresVidal, CésarVivekananda, SwamiVoegelin, EricVV. AA.Wilber, KenYogananda ParamahansaÁlvarez de Miranda, Ángel