The term Buddha (meaning awakened one or the enlightened one) may refer to Siddhārtha Gautama, the Indian spiritual teacher upon whose teachings Buddhism was founded, or to anyone who has attained the same depth and quality of enlightenment.
The positioning of Marlow's hands corresponds to the Abhaya mudrā (mudrā of no-fear), a symbolic hand gesture used in Buddhism and Hinduism to represent variously protection, peace, benevolence, and the dispelling of fear. In Gandhāra art, it is seen in representations of preaching.
The lotus flower is one of the Ashtamangala (the Eight Auspicious Symbols) that permeate Buddhist art. Buddhas and bodhisattvas are often pictured sitting on a lotus or holding a lotus. The lotus can have several meanings, often referring to the inherently pure potential of the mind.